Average Bench: 62.3% (539th of 927)

more Based on 1,044 user benchmarks.  Models: KINGSTON SKC300S37A120G, KINGSTON SKC300TS37A120G, KINGSTON KINGSTON SKC300S, KINGSTON SKC300S37A1, KINGSTON SKC300S37A120G, KINGSTON SKC300S

Above average average bench

The Kingston SSDNow KC300 120GB averaged 37.6% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. 4K Random Write Speed 69.8MB/s
Avg. 4K Random Read Speed 24.2MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Kingston SSDNow KC300 120GB is 30.2%. This is a relatively narrow range which indicates that the Kingston SSDNow KC300 120GB performs reasonably consistently under varying real world conditions.


Avg. Sequential Write Speed 176MB/s
Avg. 4K-64Thread Read Speed 120MB/s

Average Bench

(Based on 1,044 samples)
Min Avg Max
337 Read 462 514
130 Write 176 204
161 Mixed 220 268
62.6% 286 MB/s
Min Avg Max
13.8 4K Read 24.2 34.9
33.9 4K Write 69.8 107
8.25 4K Mixed 15.5 22.8
93.5% 36.5 MB/s
Min Avg Max
20.4 DQ Read 120 216
50.3 DQ Write 141 202
7.63 DQ Mixed 35.9 60.6
53.2% 98.8 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
68GB free
Firmware: 603ABBF1 Max speed: SATA 3.0 600 MB/s
Read 490
Write 194
Mixed 200
64% 295 MB/s
4K Read 35.2
4K Write 94.3
4K Mixed 24.6
135% 51.4 MB/s
DQ Read 196
DQ Write 173
DQ Mixed 59.4
79% 143 MB/s
41GB free
Firmware: 580ABBF0 Max speed: SATA 3.0 600 MB/s
Read 453
Write 161
Mixed 258
64% 291 MB/s
4K Read 19.2
4K Write 97.1
4K Mixed 8.52
91% 41.6 MB/s
DQ Read 24.4
DQ Write 103
DQ Mixed 6.93
22% 44.9 MB/s
38GB free
Firmware: 524ABBF0 Max speed: SATA 3.0 600 MB/s
Read 468
Write 181
Mixed 164
59% 271 MB/s
4K Read 22.5
4K Write 43
4K Mixed 14.7
76% 26.7 MB/s
DQ Read 24.7
DQ Write 46.7
DQ Mixed 10.7
15% 27.4 MB/s
0GB free
Firmware: 580ABBF0 Max speed: SATA 3.0 600 MB/s
Read 419
Write 132
Mixed 173
52% 241 MB/s
4K Read 15.2
4K Write 61.8
4K Mixed 14.4
74% 30.5 MB/s
DQ Read 175
DQ Write 122
DQ Mixed 49.2
64% 115 MB/s
1,044 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 6,815,337 SSDs tested.


Approx. $101 @ launch in Jul '13
AmazonUS $10213 months
EbayUS $1079 mins
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Typical SSDNow KC300 120GB Builds (Compare 2,442 builds) See popular component choices, score breakdowns and rankings.
Gaming 54%
Desktop 49%
Workstation 37%
Jet ski

Motherboard: Asrock 990FX Extreme3 - $112

EDIT WITH CUSTOM PC BUILDER Value: 62% - Good Total price: $685

Popular SSDNow KC300 120GB compatible motherboards:

How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) May 2018 SSD Rankings.

Welcome to our 2.5" and M.2 SSD comparison. We calculate effective speed for both SATA and NVMe drives based on real world performance then adjust by current prices per GB to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top SSDs. [SSDrivePro]


Group Test Results

  • Best user rated - Sometimes benchmarks get it completely wrong...
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.


Controller: SandForce SF2281. Flash Memory: Toshiba 19nm Toggle Mode.

One of the most power-efficient SSDs on the market...

Added 4 years ago.

927 Drives (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different SSDs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

 Best User Rated

The Best.
Intel Core i7-8700K $320Nvidia GTX 1070 $447Samsung 850 Evo 250GB $95
AMD Ryzen 5 1600 $170Nvidia GTX 1060-6GB $300Samsung 850 Evo 500GB $136
Intel Core i7-7700K $285AMD RX 480 $300Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $180SanDisk Extreme 64GB $41
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $961SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Extreme 16GB $20
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